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Erstellt von katie Dack
vor mehr als 8 Jahre
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Frage | Antworten |
what is the definition acid? | Acid is substance that dissolves water and releases hydrogen ions (H+) |
What is the definition of alkali? | alkaliis a substance that dissolves in water and release hydroxide ions (OH-) |
What is 1 general equations? (including oxide) | Metal oxide +acid = salt + water |
what is 1 of the general equations (including metal carbonate) | Metal carbonate + acid = salt + carbon dioxide + water |
What are the other two general equations? | Metal +acid = salt + hydrogen H+ OH- = H2O |
What gas is produced when a metal reacts with any acid? | hydrogen gas |
what test can we identify this gas? | squeaky pop |
name three metals that will not react with diluted acids | copper, silve, gold |
why is this? | because these metals are so nonreactive they dont react with diluted acids? |
why do we use titrations? | we use titrations to accuratley measure how much acid or alkali we need to exactly neutralise the other |
show a titration equation that obtains a neutral solution | Acid + Alkali = salt + water |
what term is used to describe pH 7? | Neutral |
bleach as a pH OF AROUND 12, what colour do these indicators go? Litmus paper Phenolphthalein universal indicator Methyl orange | litmus paper = RED Phenolphthalein = Pink Universal indicator= Purple Methyl orange = Yellow |
what type of reaction takes place between acid and alkali | A NEUTRALISATION reaction |
balance this equation MgCO3 + HCL = MgCl2 + H20 + CO2 | MgCO3 + 2HCl = MgCl2 + H20 + CO2 |
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